Materials Literature
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Synthesis of novel Zn/PbS (Zn 2+ + PbS) fluorescent nanostructures of varied morphology and dimension has been reported. Zn 2+ passivates the surface of RNA-templated PbS by binding to the specific sites of RNA through PO 2 − and purine bases and controls the dynamics of charge carriers, electronic properties, and gro…
Abstract iPP/organoboehmite nanocomposites were prepared to examine the influence of both boehmite crystallite size and organophilic boehmite modification on morphology development, thermal, and mechanical properties. Effective deagglomeration of the micrometer‐scaled organoboehmites was achieved, producing uniform di…
A detailed x-ray scattering study has been performed in the temperature range of the smectic- A phase for the liquid crystal compounds dodecylcyanobiphenyl (12CB) and octylcyanobiphenyl (8CB) confined in different controlled-pore glasses (CPGs) characterized by their average void radius R . On decreasing the temperatu…
Abstract Formation also matters : A model to understand the variation in the bandgap with size for nanoclusters is presented. This model shows that the confinement effect and consequent bandgap variation depend not only on shape and size, but also on the structure of the nanocrystal. magnified image The electronic str…
Abstract Polyurethanes with PTMO soft segments and toluene diisocyanate diamide as urethane segment were studied. The toluene diisocyanate diamide urethane segment was monodisperse in length. The soft segment length was changed by extending PTMO with TDI units to a soft segment length varying from 2 250 to 6 500 g · m…
Antiseptics based on phenol and phenolic derivatives were chemically incorporated into polyanhydrides as pendant groups via ester linkages. Polyanhydrides with antiseptic loadings of 46-58 wt.-% were obtained with molecular weights ranging from 9 400-23 000. In general, polymers with the bulkier antiseptics were more…
The reaction of [M(tren)Cl(2)]Cl (M = Co(III), Cr(III)) with benzene-1,2-dithiol, H(2)(bdt), and 3,6-bis(trimethylsilyl)benzene-1,2-dithiol, H(2)(tmsdt), in a water/methanol mixture in the presence of potassium tert-butoxide produced green crystals of [M(tren)(bdt)](PF(6))(1/2)(Cl)(1/2).H(2)O (1(PF(6))(1/2)(Cl)(1/2).H…
A phenomenon is presented where a propagating liquid on an array of nanopillars with scalloped features can separate into multiple layers of liquid films. The scallops were found to act as energy barriers that favor liquid separation into several layers over spreading in a uniform film. An analytical model based on su…
Abstract In the present work, analytical modeling equations describing the current transport in carbon nanotube field effect transistors (CNT‐FETs) have been developed from physical electronics, which have strong dependence on the chiral vector and device geometries. These model equations for the CNT‐FETs have been co…
With the aim of improving the yield and purity of carbon nanotubes (CNTs), we have studied the chemical vapor deposition (CVD) growth of CNTs with Fe−Mo powder catalyst and acetylene precursor by using the technique of in situ simultaneous thermal analysis (STA). We could distinguish this way the rapid catalytic growt…
Abstract Happy tree‐like friends . Using trypsin and α‐chymotrypsin cleavage sites as models, we show that the protease reactivity of peptide dendrimers, such as the structure illustrated in the figure, can be controlled by the degree of branching. Such a control provides a novel possibility to tune the biological pro…
For a direct characterization of magnetocaloric materials, the measurements are generally made in adiabatic conditions. In such conditions, the initial temperature of the material is stabilized and then the magnetic field is changed from 0 T to a given finite value. However, in the majority of magnetic refrigeration s…
The transport properties of devices made from boron nanoribbons with different sizes and sandwiched between metallic electrodes are investigated. The boron nanoribbons are constructed from the stable boron sheet. In general the transport properties of the different sizes differ from each other. In particular, the tran…
A new bioassay technique, sonication-assisted metal-enhanced fluorescence, which is based on the combined use of ultrasound waves and metal-enhanced fluorescence (MEF), is reported. In this technique, low-intensity ultrasound waves significantly reduce the bioassay time by creating a temperature gradient between the b…
The competitive adsorption of the Na salt of phytic acid (PA) and 4-methyl-4 H -1,2,4-triazole-3-thiol (4-MTTL) was investigated by using the surface-enhanced Raman scattering (SERS) technique and electrochemical measurements. On the basis of the recorded SERS spectra, it was found that PA molecules could competitivel…
Cu nanowires with different preferred orientations were successfully fabricated in porous anodic alumina membrane (PAAM) templates by an electrochemical method. Thermal expansion of as-prepared and annealed samples embedded in PAAM templates was studied by in situ X-ray diffraction (XRD) measurement in the temperature…
Abstract Metallodendrimers built around a [Ru(dpp) 3 ] 2+ ‐type core (dpp = 4,7‐diphenyl‐1,10‐phenanthroline) were prepared containing peripheral phenyl moieties. The convergent synthesis of the ligands was accomplished by coupling dendritic branches with a focal amino function to the chelating phenanthroline precurso…
In this work, we report the first comparative study directly between Al(n)H(n)(2-) and B(n)H(n)(2-) (5 < or = n < or = 12), Al(n)H(n+2) and B(n)H(n+2) (4 < or = n < or = 12) covering diverse structural forms. It was shown that Al(n)H(n)(2-) each have a closo ground structure as B(n)H(n)(2-), nicely consistent with the…
Abstract Funky discotics : Photoconductivity is measured in newly synthesized cyclopalladated metallomesogens exhibiting hexagonal columnar mesophases at room temperature. The tuning of the HOMO/LUMO energy levels by modification of the chain/core linkage (ester 1 vs ether 2 ) makes compound 2 photoconductive across t…
We present $^{13}\text{C}$-NMR studies of the pressure-temperature phase diagram of the quasi-two-dimensional organic system ${\text{EtMe}}_{3}\text{P}{[\text{Pd}{(\text{dmit})}_{2}]}_{2}$, which has a spin-gapped Mott insulating ground state at ambient pressure. As the system is pressurized, the spin-gapped insulatin…